As the ad boasts of raising pay for workers, the number 15 flashes across the screen. While $15 an hour may be a national goal for minimum wage campaigners, the company says the number was “chosen at random.”

The controversial form of scheduling locks staff into shifts that can be canceled at the last minute, with no pay. But a lawsuit in California, and investigation in New York, could lead to big changes.

Ron Johnson, the man behind the Apple Stores, has recovered from a disastrous stint as J.C. Penney’s CEO. His new delivery and set-up service for personal electronics, Enjoy, promises a new approach to running a mobile, on-demand workforce.